[pve-devel] has somebody already tested corosync3 alpha et new knet transport ?

Dietmar Maurer dietmar at proxmox.com
Wed Jun 27 09:24:35 CEST 2018


> http://people.redhat.com/ccaulfie/docs/KnetCorosync.pdf
> 
> 
> Other options in the interface section do just what you might expect.
> mcastport: <n> 
>   tells knet to use that port number <n> for communication,. The default
> remains the old one of 5405
>   +linknumber, but you can override it per link here. Even though knet doesn't
> do actual multicasting
>   the name remains for old time's sake
> 
> 
> If it's really working without multicast, with lower latencies, that's a big
> improvement :)

I am a bit scared by those benchmarks. They test with up to 4 nodes, and
conclude that 
they do not need multicast?! IMHO, it's quite obvious that you do not need
multicast
for such small clusters, but it is essential if you want bigger clusters - else
you will
produce too much traffic on the net.



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